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Finding the Fourth Proportional to 3,890.57, 5,367.02 and 2,563.79

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Solution

The fourth proportional to 3,890.57, 5,367.02 and 2,563.79 is: 3,536.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.57 : 5,367.02 = 2,563.79 : x
  2. Step 2: Convert to fraction form
    3,890.57/5,367.02 = 2,563.79/x
  3. Step 3: Cross multiply
    3,890.57x = 5,367.02 × 2,563.79
  4. Step 4: Simplify right side
    3,890.57x = 13,759,872.55
  5. Step 5: Solve for x
    x = 13,759,872.55/3,890.57
  6. Step 6: Final answer
    x = 3,536.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.